Is red snow the latest warning sign of worsening climate crisis?

French scientists investigating whether global warming is behind mysterious phenomenon in Alps

Alpinists walk on the Mont-Blanc Massif in the French Alps
Alpinists walk on the Mont-Blanc Massif in the French Alps
(Image credit: Jean-Piette Clatot/AFP via Getty Images)

A phenomenon that sees mountain snow turn from white to pinkish red each year has puzzled scientists for centuries - but now French experts are warning that the growing prevalence of so-called “blood glaciers” may be a sign of accelerated global warming.

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